Rhipsalis oblonga Loefgr.


Images | Description | Publications | Reduced Synonyms

Bonn 5918, Ilha de Sao Sebastiao, São Paulo, Brazil – material sampled, Phylogeny and evolution of the epiphytic Rhipsalideae (Cactaceae), Nadja Korotkova, Ph.D. Thesis, 2012


Paraty, Rio de Janeiro, Brazil, Utrecht University Botanic Gardens, ex. Gerardus Olsthoorn


Unknown clone


Botanical illustrations and historical images


Description

The accepted name Rhipsalis oblonga Loefgr. was published in Arch. Jard. Bot. Rio. de Janeiro 2: 36-37. 1918.

The geographic range is Brazil (Rio de Janeiro, São Paulo, Bahia) found at elevations of 0-2000 meters with an endangered status of vulnerable.

Rhipsalis oblonga is classified in the subgenus Phyllarthrorhipsalis.

Observed growing as an epiphyte. Overall habit is pendant, branches are dimorphic or monomorphic (single or more than one stem shape) and acrotonic or mesotonic (stems form from the tips to middle of previous stems).

Stems are 2 to 3 angled, margins have low to deep crenations, at times undulating or frilled (slightly to deeply scalloped), bristles are absent. Basal stems are indeterminate (seasonal growth is various lengths), 10cm-20cm x 1cm-2cm. Main stems are determinate (seasonal growth is about the same length), 8cm-23cm x 2cm-7cm.

Flowers are rotate: patent or reflexed (wheel shaped: wide open to reflexed), 0.9cm-1.5cm x 1cm-1.8cm. Petals 5, sepals from 1 to 4. Inner petals are light-yellow, yellow or green, outer petals are yellow, green, pink or red. Stamen are white, from 20 to 46. Stigma lobes from 3 to 5. Flower ovary is cylindrical, 0.13cm-0.4cm x 0.1cm-0.4cm.

Flowering position on the stem is lateral and the flower orientation in relation to the stem is perpendicular. Does repeat flowering per areole. A maximum of 3 flowers were reported at a single areole. Areole position in the stems is superficial (flower ovary is visible on the surface of the stems during bud development). Trichomes or wool is absent at the areoles after flowering.

Unripe fruit is yellow or green. Ripe fruit is globose; white or green, 0.5cm-0.8cm x 0.5cm-0.8cm.

Other notable features:
Ripe fruit sometimes has a pinkish ring at the top. R. oblonga is closely related to1,2 and can be difficult to distinguish from some specimen of R. barthlottii, R. crispata, R. cuneata, and R. occidentalis. It often has quite thin stems, almost construction paper thin. The thinness of the stems can, at times, result in an undulating or frilly margin, but that is not a good identifying characteristic for this species as R. barthlottii, R. crispata, R. occidentalis, R. cuneata, R. goebeliana, and R. rhombea can also inconsistently present the same characteristic. Stems can be anywhere from the length and width of a finger tip to over the length and width of a hand. The most identifiable characteristics are the thin stems, white fruit, fruit shape, white and light-yellow to yellow flowers, small equilaterally sized ovaries, and often longer petals.

Comments:
Originally sampled as R. oblonga, likely the material of the proposed species; Rhipsalis crispimarginata: Material Sampled, Calvente 202, RJ, Brazil (SPF), in Molecular Phylogeny, Evolution, and Biogeography of South American Epiphytic Cacti3
Originally sampled as R. oblonga, likely the material of the proposed species; Rhipsalis crispimarginata: Material Sampled, Calvente 196, RJ, Brazil (SPF), in Molecular Phylogeny, Evolution, and Biogeography of South American Epiphytic Cacti3

1Phylogeny and evolution of the epiphytic Rhipsalideae (Cactaceae), Nadja Korotkova, Ph.D. Thesis, 2012
2Molecular phylogeny, evolution and systematics of Rhipsalis (Cactaceae), Alice Calvente, Ph.D. Thesis, 2010
3Molecular Phylogeny, Evolution, and Biogeography of South American Epiphytic Cacti, Alice Calvente, Daniela C. Zappi, Félix Forest, Lúcia G. Lohmann, International Journal of Plant Sciences, 172:7, 2011

Taxonomic treatment and description were derived from:
  • The referenced publications below
    • published material was examined and consolidated
      • to determine minimum and maximum size ranges
      • to determine color variations and shapes
  • In rare cases
    • if minimum and maximum values were unreported, authors examined their own materials
    • if clearly observed colors were unreported, authors expanded the botanical descriptions

Rhipsalis oblonga referenced publications

TitleAuthorsTypeJournalYearVolumeIssuePagesPublisher
Epifytische cactussen, rhipsalis.eu. Accessed on: 15 Jan. 2025Aat van UijenWebsite2025
IPCN Chromosome Reports. Missouri Botanical Garden. Accessed on: 18 Jan. 2025Website2025
Royal Botanic Gardens Kew | Plants of the World Online. Accessed on: 15 Jan. 2025Website2025
The Caryophyllales Network 2015+ [continuously updated]: A global synthesis of species diversity in the angiosperm order Caryophyllales. Accessed on: 15 Jan. 2025Website2025
WFO The World Flora Online. Accessed on: 15 Jan. 2025Website2025
The IUCN Red List of Threatened Species. Version 2024-2. accessed on 2025-01-07Website2024
Updated List of the Flora of the Serra Dos Órgãos National Park, Rio de Janeiro, RJ, BrazilMarcus Alberto Nadruz Coelho, Cecilia Faria CronembergerWebsite2024
Rio de Janeiro - Cactaceae of the State of Rio de Janeiro (version 1, 8/2022), fieldguides.fieldmuseum.orgDiego Rafael Gonzaga, Maria de Fátima Freitas, Alice CalventeWebsite2022
Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the familyNadja Korotkova, David Aquino, Salvador Arias, Urs Eggli, Alan Franck, Carlos Gómez-Hinostrosa, Pablo C. Guerrero, Héctor M. Hernández, Andreas Kohlbecker, Matias Köhler, Katja Luther, Lucas C. Majure, Andreas Müller, Detlev Metzing, Reto Nyffeler, Daniel Sánchez, Boris Schlumpberger, Walter G. BerendsohnJournal ArticleWilldenowia2021512251 – 270Botanic Garden and Botanical Museum Berlin (BGBM)
Cactaceae in Flora do Brasil 2020. Jardim Botânico do Rio de Janeiro. Accessed on: 15 Jan. 2025Daniela C. Zappi, Nigel P. TaylorWebsite2020
Cactaceae na Serra da Mantiqueira, BrasilDiego Rafael Gonzaga, Luiz Menini Neto, Ariane Luna PeixotoJournal ArticleRodriguésia202071
Flora do Rio de Janeiro: CactaceaeMaria de Fátima Freitas, Alice Calvente, Diego Rafael GonzagaJournal ArticleRodriguésia202071
Neotypification of Rhipsalis rhombea (Rhipsalideae, Cactaceae) and Its Taxonomic HistoryRalf Bauer, Nadja KorotkovaJournal ArticleHaseltonia20202795-101Cactus and Succulent Society of America
Rhipsalis, cactussen uit het tropische woud 1Aat van UijenJournal ArticleSucculenta2017966270-275
Rhipsalis (Cactaceae): loss and gain of floral rewards is mirrored in range sizes and distribution patterns of speciesBernadette Grosse-Veldmann, Stefan Abrahamczyk, Jens Mutke, Wilhelm Barthlott, Maximilian WeigendJournal ArticleBotanical Journal of the Linnean Society2016180491-503
Minas Gerais, Rio de Janeiro, São Paulo & Espírito Santo -- Cactaceae of Serra da Mantiqueira (version 1, 11/2015), fieldguides.fieldmuseum.orgDiego Rafael Gonzaga, Ariane Luna Peixoto, Luiz Menini NetoWebsite2015
A New Subgeneric Classification of Rhipsalis (Cactoideae, Cactaceae)Alice CalventeJournal ArticleSystematic Botany2012374983 – 988The American Society of Plant Taxonomists
Phylogeny and evolution of the epiphytic Rhipsalideae (Cactaceae)Nadja KorotkovaPh.D. Thesis2012Rheinische Friedrich-Wilhelms-Universität Bonn
Molecular Phylogeny, Evolution, and Biogeography of South American Epiphytic CactiAlice Calvente, Daniela C. Zappi, Félix Forest, Lúcia G. LohmannJournal ArticleInternational Journal of Plant Sciences20111727902-914
What does it take to resolve relationship and to identify species with molecular markers? An example from the epiphytic Rhipsalideae (Cactaceae)Nadja Korotkova, Borsch T, Dietmar Quandt, Nigel P. Taylor, Müller K, Wilhelm BarthlottJournal ArticleAmerican Journal of Botany2011981549-1572
Molecular phylogeny, evolution and systematics of Rhipsalis (Cactaceae)Alice CalventePh.D. Thesis2010Instituto de Biociências da Universidade de São Paulo
Rhipsalis cuneata Britton & Rose, eine variable Art mit flachen Trieben von den Ostabhängen der Anden Boliviens, Perus and Ecuadors - mit Beschreibung der neuen Unterart R. cuneata ssp. australis Ralf Bauer ssp. nov.Ralf BauerJournal ArticleEPIG2008625-28
CactaceaeDaniela C. Zappi, Lidyanne Yuriko Saleme Aona, Nigel P. TaylorJournal ArticleFlora Fanerogâmica do Estado de São Paulo20075180-193
A Unique Cactus with Scented and Possibly Bat-Dispersed Fruits: Rhipsalis juengeriBoris Schlumpberger, Robin A. Clery, Wilhelm BarthlottJournal ArticlePlant Biology200682265-70
The New Cactus Lexicon: Atlas of illustrationsDavid Hunt, Nigel P. Taylor, Graham CharlesBook2006104-120DH Books
The New Cactus Lexicon: TextDavid Hunt, Nigel P. Taylor, Graham CharlesBook2006138-139,142-143,253-257DH Books
Cacti of Eastern BrazilNigel P. Taylor, Daniela C. ZappiBook2004The Royal Botanic Gardens, Kew
Taxonomy and Phytogeography of the Cactaceae of Eastern BrazilNigel P. TaylorPh.D. Thesis2000
Die Gattung Rhipsalis GAERTNER - Vielfalt, Verbreitung und KulturE. SteinbergJournal ArticleEPIG199911114-20
Die Namen der Gattungen und Arten epiphytischer Kakteen. Teil 1. RhipsalideaeRalf BauerJournal ArticleEPIG19968247-51
Notes towards a Monograph of Rhipsalideae (Cactaceae)Wilhelm Barthlott, Nigel P. TaylorJournal ArticleBradleya19951343-79British Cactus and Succulent Society
Chromosome numbers in the tribe Rhipsalinae (Cactaceae)T. W. J. Gadella, E. Kliphuis, J. NaberJournal ArticleBotaniska notiser19793294
Cactus LexiconCurt Backeberg, Walther HaageBook1966205,220-222,440-449, 647, 750Blandford Press Ltd. (1966-1973)
Über Rhipsalis - II. Teil: Die Heimat (Schluß)Erich SchäferJournal ArticleKakteen und andere Sukkulenten1962137114-117
Notiser från Lunds Botaniska Trädgård.Hakon HjelmqvistJournal ArticleBotaniska notiser19414343-361
Rodriguésia: Revista do Jardim Botânico do Rio de JaneiroJardim Botânico do Rio de JaneiroBook193542-4479-83Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
The Cactaceae : descriptions and illustrations of plants of the cactus familyNathaniel Lord Britton, Mary E. Eaton, N. J. Rose, Helen Adelaide WoodBook19234208-247Carnegie Institution of Washington
Archivos do Jardim Botânico do Rio de JaneiroJardim Botânico do Rio de JaneiroBook1918234-47Rio de Janeiro, Jardim Botanico

Reduced Synonyms

NameReduced byPublished DatePublished In
Rhipsalis crispimarginata Loefgr.Barthlott & Taylor (1995)1918Arch. Jard. Bot. Rio de Janeiro 2: 37. 1918
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